UFC president Dana White posted a Twitter message at 4 p.m. ET, an hour before the start of the event, stating Nover had suffered a seizure in his locker room but that the fighter is now “OK.”

The fight was part of a seven-fight preliminary-card lineup at the Cox Convention Center in Oklahoma City.

Spike TV officials told MMAjunkie.com (www.mmajunkie.com) that Nover has been transported to a local hospital for tests.

Nover, the lightweight runner-up on the eighth season of “The Ultimate Fighter,” looked to erase the sting of back-to-back losses at UFC Fight Night 19. After Efrain Escudero upset Nover in the December 2008 finals of “TUF 8,” the fighter was then stopped by Kyle Bradley in just 63 seconds at UFC 98 in May.

White stated that Nover’s opponent was understanding of the situation.

“Stout was very cool during the incident and is a class act,” he wrote.

Because Nover’s seizure happened so close to fight time, the UFC is unable to secure and receive medical clearance for a replacement. The fight has been scrapped from the night’s lineup, and both fighters will be shifted to future UFC cards.